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What is the value of integer q? qr + qs = r + s r ≠ -s

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VP
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Concentration: International Business, Operations
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What is the value of integer q? qr + qs = r + s r ≠ -s  [#permalink]

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New post 02 Jul 2018, 11:03
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Difficulty:

  35% (medium)

Question Stats:

67% (00:48) correct 33% (00:33) wrong based on 9 sessions

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What is the value of integer q?

1. qr + qs = r + s

2. r ≠ -s

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Re: What is the value of integer q? qr + qs = r + s r ≠ -s  [#permalink]

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New post 02 Jul 2018, 11:06
1. q(r+s)-(r+s)=0
(r+s)(q-1)=0
r=-s, or q=1
Insufficient

2. Insufficient

1. and 2. q=1 Sufficient

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Re: What is the value of integer q? qr + qs = r + s r ≠ -s  [#permalink]

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New post 02 Jul 2018, 11:07
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Re: What is the value of integer q? qr + qs = r + s r ≠ -s &nbs [#permalink] 02 Jul 2018, 11:07
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What is the value of integer q? qr + qs = r + s r ≠ -s

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